diff options
Diffstat (limited to 'gnu/packages/patches/libtiff-tiffcp-underflow.patch')
| -rw-r--r-- | gnu/packages/patches/libtiff-tiffcp-underflow.patch | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/gnu/packages/patches/libtiff-tiffcp-underflow.patch b/gnu/packages/patches/libtiff-tiffcp-underflow.patch new file mode 100644 index 0000000000..5615cbb3e1 --- /dev/null +++ b/gnu/packages/patches/libtiff-tiffcp-underflow.patch @@ -0,0 +1,41 @@ +Fix a integer underflow in tiffcp that led to heap overflows in +TIFFReverseBits(): + +http://bugzilla.maptools.org/show_bug.cgi?id=2598 + +2016-12-02 Even Rouault <even.rouault at spatialys.com> + + * tools/tiffcp.c: avoid uint32 underflow in cpDecodedStrips that + can cause various issues, such as buffer overflows in the library. + Reported by Agostino Sarubbo. + Fixes http://bugzilla.maptools.org/show_bug.cgi?id=2598 + + +/cvs/maptools/cvsroot/libtiff/ChangeLog,v <-- ChangeLog +new revision: 1.1174; previous revision: 1.1173 +/cvs/maptools/cvsroot/libtiff/tools/tiffcp.c,v <-- tools/tiffcp.c +new revision: 1.56; previous revision: 1.55 + +Index: libtiff/tools/tiffcp.c +=================================================================== +RCS file: /cvs/maptools/cvsroot/libtiff/tools/tiffcp.c,v +retrieving revision 1.55 +retrieving revision 1.56 +diff -u -r1.55 -r1.56 +--- libtiff/tools/tiffcp.c 8 Oct 2016 15:54:57 -0000 1.55 ++++ libtiff/tools/tiffcp.c 2 Dec 2016 22:13:32 -0000 1.56 +@@ -1,4 +1,4 @@ +-/* $Id: tiffcp.c,v 1.55 2016-10-08 15:54:57 erouault Exp $ */ ++/* $Id: tiffcp.c,v 1.56 2016-12-02 22:13:32 erouault Exp $ */ + + /* + * Copyright (c) 1988-1997 Sam Leffler +@@ -985,7 +985,7 @@ + tstrip_t s, ns = TIFFNumberOfStrips(in); + uint32 row = 0; + _TIFFmemset(buf, 0, stripsize); +- for (s = 0; s < ns; s++) { ++ for (s = 0; s < ns && row < imagelength; s++) { + tsize_t cc = (row + rowsperstrip > imagelength) ? + TIFFVStripSize(in, imagelength - row) : stripsize; + if (TIFFReadEncodedStrip(in, s, buf, cc) < 0 |